f(x)=sin2次方(x+派\4)-sin2次方(x-派\4)最小正周期
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![f(x)=sin2次方(x+派\4)-sin2次方(x-派\4)最小正周期](/uploads/image/z/7180075-19-5.jpg?t=f%28x%29%3Dsin2%E6%AC%A1%E6%96%B9%28x%2B%E6%B4%BE%5C4%29-sin2%E6%AC%A1%E6%96%B9%28x-%E6%B4%BE%5C4%29%E6%9C%80%E5%B0%8F%E6%AD%A3%E5%91%A8%E6%9C%9F)
f(x)=sin2次方(x+派\4)-sin2次方(x-派\4)最小正周期
f(x)=sin2次方(x+派\4)-sin2次方(x-派\4)最小正周期
f(x)=sin2次方(x+派\4)-sin2次方(x-派\4)最小正周期
f(x) = (1/2)[1 - cos(2x + π/2)] - (1/2)[1 - cos(2x - π/2)]
= 1/2 + (1/2)sin(2x) - 1/2 + (1/2)sin(2x)
= sin(2x)
最小正周期: 2π/2 = 1